Information input device

An information input device includes a display, a touch sensor, and a controller. The display displays a plurality of objects. The touch sensor outputs a signal indicating a touch position at which the touch surface is touched. When receiving the signal indicating the touch position, the controller determines whether or not the touch position is a position corresponding to any of the objects. When determining that the touch position is a position corresponding to any of the objects, the controller accepts the touch as a touch operation. When accepting the touch operation, the controller sets a portion of the touch surface as an erroneous input restriction region. The controller sets the erroneous input restriction region based on the touch position. When determining that the touch operation is cancelled, the controller changes the erroneous input restriction region based on the touch position.